Maintenance method for preventing slurry in desulfurization tower from being discharged
A desulfurization tower and slurry technology, applied in the field of desulfurization towers, can solve the problems of nowhere to discharge slurry in the tower, improper treatment, affecting water system indicators and maintenance progress, etc., and achieve the effect of protecting water resources and the environment
Pending Publication Date: 2021-06-29
山西建龙实业有限公司
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Problems solved by technology
[0004] The invention provides a maintenance method in which the slurry in the desulfurization tower is not discharged outside, aiming to solve the problem that the slurry in the tower has no place to discharge, improper treatment, and seriously affects the water system indicators and maintenance progress
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] see figure 1 , the present invention provides a technical solution: a method for overhauling the slurry in the desulfurization tower without discharge, comprising the following steps:
[0023] S1. 10 days before the maintenance and cleaning of the bottom of the desulfurization tower, start cleaning the bottom of the sedimentation tank. Install a valve at the overflow port of the sedimentation tank. Bit height is 4 meters. The model of the valve is DN200. The desulfurization tower adopted in the present invention has about 400 cubic meters of slurry in the tower, and there is nowhere to st...
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The invention is applicable to the technical field of desulfurization towers, and provides a maintenance method for preventing slurry in a desulfurization tower from being discharged. The liquid level height of a sedimentation tank of the desulfurization tower is 4 m, when the sedimentation tank is cleaned, filtrate wastewater generated during working of the desulfurization tower is discharged into a filtrate tank, wastewater in the sedimentation tank is conveyed to the filtrate tank, and the sedimentation tank is completely cleaned. the liquid level in the desulfurization tower is reduced to be 3 m or below, slurry in the desulfurization tower is discharged into a sedimentation tank, shutdown maintenance operation is started after the slurry in the desulfurization tower is completely discharged, during maintenance operation, the slurry in the desulfurization tower is discharged into a pit tank, the slurry discharged from the desulfurization tower is transferredin to the sedimentation tank by using a pit tank pump, maintenance operation is started after the slurry in the desulfurization tower is completely discharged, and after the maintenance operation is finished, the slurry in the sedimentation tank is discharged into the pit tank in multiple batches by using the sewage pump on the sedimentation tank, and then is discharged into the tower for recycling, so that the maintenance operation is finished on time, the slurry in the tower is not discharged, and the water resource environment is protected.
Description
technical field [0001] The invention belongs to the technical field of desulfurization towers, and in particular relates to a maintenance method for preventing slurry in the desulfurization tower from being discharged outside. Background technique [0002] After the sintering flue gas is dedusted, it is led by the self-exhausting fan and sent to the wet desulfurization tower by the booster fan. On the XP-II high-efficiency fluidized mass transfer component in the desulfurization tower, the SO in the flue gas 2 Full countercurrent contact with the desulfurization liquid from the desulfurization circulating pump, SO 2 After being desulfurized, the flue gas after desulfurization is dehydrated and demisted and then enters the top of the tower for emission. In the reaction zone at the bottom of the desulfurization tower, most of the desulfurized slurry is calcium sulfite, which is oxidized by the aeration device at the bottom of the tower and becomes Calcium sulfate, most of the...
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Login to View More IPC IPC(8): B01D53/80B01D53/96B01D53/50B01D36/04C02F9/02C02F103/18
CPCB01D53/80B01D53/502B01D53/96B01D36/04C02F1/001C02F2001/007C02F2103/18
Inventor 丁磊崔俊宏
Owner 山西建龙实业有限公司